Thanks, Tracy. I'd like to oxygenate the bottom layer such that both HSB and LMB would be comfortable & unstressed, even on the hottest summer day. Gotta think that both would be healthier without heat stress. Heck, maybe even keep cool/cold water fish alive over the summer.

That's a tall order, though. Still trying to find a way.

Last edited by anthropic; 05/29/21 03:03 PM.

7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160